# import requests
#
# res = requests.get('https://......')
# # 获取网络文件的内容
# print(res.content)


# def foo():
#     print("starting...")
#     while True:
#         res = yield 4
#         print("res:",res)
# g = foo()
# print(next(g))
# print("*"*20)
# print(next(g))


# import datetime
#
# print(datetime.datetime.now().date())
#
# print(datetime.datetime.now().date() - datetime.timedelta(days=30))



# import random
#
# n = 0
# while n <= 15:
#     print(round(random.uniform(4578, 9957), 2))
#     n += 1


